Detonation properties of unsensitized and sensitized JP-10 and Jet-A fuels in air for pulse detonation engines

Akbar, R.; Thibault, P.; Harris, Paul G.; Lussier, Louis‐Simon; Zhang, F.; Murray, S.B.; Gerrard, K. B.

doi:10.2514/6.2000-3592

Cited by 18 publications

(6 citation statements)

References 5 publications

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“…As an oxidizer, a mixture of oxygen and nitrogen was used. They found the average cell size for the JP-10-air mixture to be 60.4 mm, which is comparable with the measurements provided by Akbar et al [24]. Moreover, this result suggests that propane fuel can be used in initial research of detonation engines.…”

Section: Introductionsupporting

confidence: 79%

Study of detonation initiation in kerosene–oxidizer mixtures in short tubes

Kindracki

2014

Shock Waves

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The paper describes experimental studies of detonation initiation in a kerosene-oxidizer mixture in a short test tube. The aim of the study is to determine the minimum diameter of the tube and the minimum level of energy that enables direct initiation of the detonation. Knowledge about these values will inform the design of a jet engine combustion chamber in which thermal energy will be generated by a rotating detonation process. The test tube and the oxidizer inside the tube were heated using specially designed heaters installed outside of the tube. The heated oxidizer provided thermal conditions similar to the conditions for a compressor with small to medium static pressure. The study was conducted for four different tube diameters and for various energies of initiation. As a result, measurements of pressure waveforms were obtained for various cases of fuel injection, which were then compared against the results of the shock wave generated by the initiator. This study provides a value for the energy (the pressure of the mixture in the initiator), which provided direct initiation of detonation for a keroseneoxidizer mixture. Different tube diameters led to the initiation of detonation for various oxygen-nitrogen compositions as an oxidizer.

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Section: Introductionsupporting

confidence: 79%

Study of detonation initiation in kerosene–oxidizer mixtures in short tubes

Kindracki

2014

Shock Waves

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“…From a practical perspective, it is interesting to consider that the main combustor will be fed by liquid fuels that have been approved by the aviation industry, such as JP-10 or Jet-A. Because the detonation cell sizes of JP-10/air and Jet-A/air are close to that of propane/air, propane is a suitable gaseous surrogate for JP-10 and Jet-A [4]. Nevertheless, Schultz and Shepherd [3] indicate that a detonation wave in a tube of d = 33 mm filled with a C 3 H 8 + 5O 2 mixture failed to transmit into the main combustor with d = 165 mm filled with a C 3 H 8 + 5(O 2 + βN 2 ) mixture (β 0.76).…”

Section: Introductionmentioning

confidence: 99%

Experimental study on transmission of an overdriven detonation wave from propane/oxygen to propane/air

Lai

Chung

et al. 2008

Combustion and Flame

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“…Initially, the CJ values are used to provide the onset of detonation on the left. The numerically attained cell size of the kerosene-air mixture is validated against the experiment data [16]. Three different initial mixture pressures of 1, 1.5, and 2 bars are considered.…”

Section: A Detonation Of Kerosene-air Mixturementioning

confidence: 99%

Numerical Investigation of Kerosene-Based Pulse-Detonation Loading on the Metal Tubes

Gwak

Lee

Yoh

2016

Journal of Propulsion and Power

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This paper presents a numerical investigation on the kerosene-air mixture detonation in tubes and the effect of thermal softening on the structural response of the tube of varying thicknesses. The chemical reaction of kerosene-air mixture is modeled by the Arrhenius rate law with an ideal-gas equation of state, and the plastic deformation of the metal tube is described by the Mie-Gruneisen equation of state and Johnson-Cook strength model. To track the multimaterial interface motion and to determine the temperature-varying wall conditions, a hybrid particle-level-set method within the ghost-fluid framework is used. The pulse-detonation loading of metal tube is validated with experimental cell size, and the burst pressure of copper and 304 stainless tubes for varying wall thicknesses and wall temperatures is compared with the theory. The safety aspect of detonation tube is addressed by the observation that the prediction of critical tube thickness with thermal softening included is a better fit to the theoretical value than no thermal softening included.

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Detonation properties of unsensitized and sensitized JP-10 and Jet-A fuels in air for pulse detonation engines

Cited by 18 publications

References 5 publications

Study of detonation initiation in kerosene–oxidizer mixtures in short tubes

Study of detonation initiation in kerosene–oxidizer mixtures in short tubes

Experimental study on transmission of an overdriven detonation wave from propane/oxygen to propane/air

Numerical Investigation of Kerosene-Based Pulse-Detonation Loading on the Metal Tubes

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